Chair seat and back



FIG. 1 is a front elevational view of a chair seat and back according to my new design, with portions shown in phantom to indicate environment;

FIG. 2 is a right side elevational view, the left side being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a chair seat and back, as shown and described. 